nasa/fprime

`fprime-util format` should work for libraries

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#4926 opened on Mar 31, 2026

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F´ Toolshelp wanted

Description
F´ Version
Affected Component

Feature Description

An F´ library isn't a project, yet it still should be able to be formattable. The issue is that there's no easy way to go find the default F´ .clang-format file. Either libraries should provide their own, or maybe we could add in the behavior to go fetch that file and put it in the root of the library. Many possible solutions.

Expected behavior:

Contributor guide

Tech stack
cpp
Domain
tooling
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Basic knowledge of F´ frameworkFamiliarity with fprime util tool
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
Investigate how fprime util currently differentiates between projects and libraries. Look at the format command implementation, likely in fprime util's source code under scripts or src. Determine where the default .clang format is located for projects and how to make it accessible for libraries. Consider adding a fallback to copy the default .clang format from the F´ installation directory into the library root if not present. Test with an external library like fprime zephyr.